TABLE 1.
Geographic information and diversity indices of sampled locations.
| Location | FAO fishing area | Latitude | Longitude | N | Hs | pA |
|---|---|---|---|---|---|---|
| Tagus – PT | 9 (9.a) | 38.66 | −9.30 | 20 | 0.12 | 98 |
| Mondego – PT | 9 (9.a) | 40.14 | −8.89 | 20 | 0.11 | 84 |
| Ulla – SP | 9 (9.a) | 42.52 | −8.95 | 22 | 0.12 | 102 |
| Gironde – FRA | 8 (8.b) | 44.62 | −1.31 | 18 | 0.12 | 77 |
| Frome – UK | 7 (7.e) | 50.71 | −2.06 | 34 | 0.10 | 178 |
| Severn‐ UK | 7 (7.f) | 51.37 | −4.10 | 23 | 0.12 | 186 |
| Ouse – UK | 4 (4.b) | 53.62 | −0.04 | 27 | 0.12 | 94 |
| Rolfsan – Sweden | 3 (3.a) | 57.42 | 12.07 | 22 | 0.12 | 228 |
Note: Sampled sites are coded for the names used in the manuscript. FAO Fishing area codes relate to the following Northeast Atlantic zones: 9.a – Portuguese Waters East, 8.b – Bay of Biscay Central, 7.e – Western English Channel, 7.f – Bristol Channel, 4.b – Central North Sea, 3.a – Skagerrak.
Abbreviations: Hs, heterozygosity estimate; n, number of samples; pA, private alleles.